modified:   README.md
	modified:   problem008.cpp
	modified:   problem008.txt
	modified:   problem010.cpp
	modified:   problem010_2.cpp
	new file:   problem015.pl
	new file:   problem015_2.pl
	new file:   problem016.pl
	new file:   problem017.pl
	modified:   problem_0005.cpp
	modified:   problem_0006.cpp